Band-gap narrowing in ordered and disordered semiconductor alloys
Journal Article
·
· Applied Physics Letters; (USA)
OSTI ID:6925288
Either spontaneous or artificial ordering of semiconductor alloys into CuAu-like, chalcopyrite, or CuPt-like structures is predicted to be accompanied by a reduction in the direct band gaps relative to the average over the binaries. In this letter calculated results are presented for seven III-V and II-VI alloys. We identify the mechanism for this band-gap narrowing as band folding followed by repulsion between the folded states. The latter is coupled by the non-zinc-blende component of the superlattice potential. The same physical mechanism (but to a different extent) is responsible for gap bowing in {ital disordered} alloys.
- DOE Contract Number:
- AC02-77CH00178
- OSTI ID:
- 6925288
- Journal Information:
- Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 56:7; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Band gaps and spin-orbit splitting of ordered and disordered Al/sub x/Ga/sub 1-//sub x/As and GaAs/sub x/Sb/sub 1-//sub x/ alloys
Band offsets and optical bowings of chalcopyrites and Zn-based II-VI alloys
Quasiparticle band structures of short-period superlattices and ordered alloys of AlN and GaN
Journal Article
·
Tue Feb 14 23:00:00 EST 1989
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6439577
Band offsets and optical bowings of chalcopyrites and Zn-based II-VI alloys
Journal Article
·
Fri Sep 15 00:00:00 EDT 1995
· Journal of Applied Physics
·
OSTI ID:119405
Quasiparticle band structures of short-period superlattices and ordered alloys of AlN and GaN
Journal Article
·
Fri Jan 14 23:00:00 EST 1994
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:5304352
Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
ANTIMONIDES
ANTIMONY COMPOUNDS
ARSENIC COMPOUNDS
ARSENIDES
CADMIUM COMPOUNDS
CADMIUM TELLURIDES
CHALCOGENIDES
DATA
ENERGY GAP
GALLIUM ANTIMONIDES
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
GALLIUM PHOSPHIDES
INDIUM ARSENIDES
INDIUM COMPOUNDS
INDIUM PHOSPHIDES
INFORMATION
MERCURY COMPOUNDS
MERCURY TELLURIDES
NUMERICAL DATA
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PNICTIDES
TELLURIDES
TELLURIUM COMPOUNDS
THEORETICAL DATA
ZINC COMPOUNDS
ZINC TELLURIDES
360603* -- Materials-- Properties
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
ANTIMONIDES
ANTIMONY COMPOUNDS
ARSENIC COMPOUNDS
ARSENIDES
CADMIUM COMPOUNDS
CADMIUM TELLURIDES
CHALCOGENIDES
DATA
ENERGY GAP
GALLIUM ANTIMONIDES
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
GALLIUM PHOSPHIDES
INDIUM ARSENIDES
INDIUM COMPOUNDS
INDIUM PHOSPHIDES
INFORMATION
MERCURY COMPOUNDS
MERCURY TELLURIDES
NUMERICAL DATA
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PNICTIDES
TELLURIDES
TELLURIUM COMPOUNDS
THEORETICAL DATA
ZINC COMPOUNDS
ZINC TELLURIDES